If I were wiring a digital dash into my Turbo Dodge, but it didn't come with one what would be the bare minimum wires I would need to hook up to determine if the dash was any good? I have the blue/white wire which is 12V ignition hooked up, but there is a blue/white wire on each of the two harness that went into the analoug gauges. I also hooked up the illumination lead and the ground. Then I found that there are 2 ground wires on one harness, so I wired them together. Is that ok?
After doing all this, I got zero activity from the digital cluster. What am I missing?